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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Fine control of terahertz radiation from filamentation by molecular lensing in air
1Laboratoire d'Optique Appliquée, ENSTA ParisTech, Ecole Polytechnique, CNRS UMR 7639, Palaiseau, 91761, France.
Optics Letters
|May 19, 2010
Abstract:
We demonstrate a method to control remotely the terahertz (THz) source in air based on the bifilamentation of femtosecond laser pulses. By fine tuning the time delay between the two pulses, a significant modulation of the THz intensity from bifilamentation is observed. The phenomenon is attributed to the molecule quantum lensing effect around the air molecule revival time, which changes the separation between the two neighboring plasma producing filaments.

